When I started installing roms on my Imagio, I started calling it Spitfire x.x. I started at 1.0 and went up depending on how big of a change the roms were. Fortunately it is now at 4.0, so it was an easy jump to make my Focus Spitfire 5.0. This has been very useful, since Windows files my synced pictures in folders using the phone's name.